Enter a species  (e.g. Al, Fe): Ba
Enter a hexagonal lattice type (e.g. hcp): hcp
Enter a model name: Morse_Shifted_GirifalcoWeizer_1959MedCutoff_Ba__MO_229241184339_003
Enter hexagonal lattice constants 'a' and 'c' (m): 4.488222081829301e-10, 7.330883445106603e-10

Calculating isothermal bulk modulus

Optimization terminated successfully.
         Current function value: -3.496752
         Iterations: 71
         Function evaluations: 182

Finished calculation

C11 = 19.626633664730935 GPa
C12 = 4.718194505316449 GPa
  B = 9.687674225121278 GPa